Global Patent Index - EP 3989567 A4

EP 3989567 A4 20230405 - BDPCM-BASED IMAGE DECODING METHOD AND DEVICE FOR SAME

Title (en)

BDPCM-BASED IMAGE DECODING METHOD AND DEVICE FOR SAME

Title (de)

VERFAHREN UND VORRICHCUNG ZUR BILDDEKODIERUNG AUF BDPCM-BASIS

Title (fr)

PROCÉDÉ DE DÉCODAGE D'IMAGE SUR LA BASE D'UNE BDPCM ET DISPOSITIF ASSOCIÉ

Publication

EP 3989567 A4 20230405 (EN)

Application

EP 20826626 A 20200617

Priority

  • US 201962863258 P 20190618
  • KR 2020007811 W 20200617

Abstract (en)

[origin: US2022078433A1] An image decoding method performed by a decoding device according to the present document is characterized by including: a step for determining whether the width and height of the current block are smaller than or equal to a maximum transform block size; a step for acquiring a Block-based Delta Pulse Code Modulation (BDPCM) flag, which indicates whether to apply BDPCM to the current block, when the width and height are smaller than or equal to the maximum transform block size; a step for acquiring a BDPCM direction flag that indicates a prediction direction for the current block on the basis of the BDPCM flag; a step for deriving prediction samples of the current block on the basis of an intra-prediction mode derived on the basis of the BDPCM direction flag; and a step for deriving recovered samples of the current block on the basis of the prediction samples.

IPC 8 full level

H04N 19/157 (2014.01); H04N 19/11 (2014.01); H04N 19/132 (2014.01); H04N 19/18 (2014.01); H04N 19/593 (2014.01); H04N 19/597 (2014.01); H04N 19/70 (2014.01)

CPC (source: CN EP KR US)

H04N 19/105 (2014.11 - US); H04N 19/11 (2014.11 - CN EP KR); H04N 19/13 (2014.11 - CN); H04N 19/132 (2014.11 - CN KR US); H04N 19/157 (2014.11 - CN EP KR); H04N 19/159 (2014.11 - US); H04N 19/176 (2014.11 - EP US); H04N 19/18 (2014.11 - CN KR); H04N 19/46 (2014.11 - US); H04N 19/593 (2014.11 - EP); H04N 19/597 (2014.11 - CN KR); H04N 19/70 (2014.11 - CN EP KR US)

Citation (search report)

  • [E] EP 3985970 A1 20220420 - WILUS INST STANDARDS & TECH INC [KR], et al
  • [I] BENJAMIN BROSS ET AL: "Versatile Video Coding (Draft 5)", no. JVET-N1001-v8; JVET-N1001, 11 June 2019 (2019-06-11), pages 1 - 397, XP030205561, Retrieved from the Internet <URL:http://phenix.int-evry.fr/jvet/doc_end_user/documents/14_Geneva/wg11/JVET-N1001-v8.zip JVET-N1001-v8.docx> [retrieved on 20190611]
  • [A] JIANLE CHEN ET AL: "Algorithm description for Versatile Video Coding and Test Model 5 (VTM 5)", no. JVET-N1002, 11 June 2019 (2019-06-11), pages 1 - 76, XP030205562, Retrieved from the Internet <URL:http://phenix.int-evry.fr/jvet/doc_end_user/documents/14_Geneva/wg11/JVET-N1002-v2.zip JVET-N1002-v2.docx> [retrieved on 20190611]
  • [A] BOYCE (INTEL) J: "AHG15: On interoperability point signalling", no. JVET-N0276, 13 March 2019 (2019-03-13), XP030202943, Retrieved from the Internet <URL:http://phenix.int-evry.fr/jvet/doc_end_user/documents/14_Geneva/wg11/JVET-N0276-v1.zip JVET-N0276.docx> [retrieved on 20190313]
  • [XP] COBAN (QUALCOMM) M ET AL: "CE8-related: RDPCM intra mode mapping, maximum RDPCM block size", no. JVET-O0200 ; m48309, 26 June 2019 (2019-06-26), XP030218826, Retrieved from the Internet <URL:http://phenix.int-evry.fr/jvet/doc_end_user/documents/15_Gothenburg/wg11/JVET-O0200-v1.zip JVET-O0200.docx> [retrieved on 20190626]
  • [XP] YOO (LGE) S ET AL: "CE8-related : Unified condition between BDPCM and transform skip", no. JVET-O0206 ; m48315, 25 June 2019 (2019-06-25), XP030218844, Retrieved from the Internet <URL:http://phenix.int-evry.fr/jvet/doc_end_user/documents/15_Gothenburg/wg11/JVET-O0206-v1.zip JVET-O0206_v1.docx> [retrieved on 20190625]
  • [XP] COBAN (QUALCOMM) M ET AL: "Unified syntax for JVET-O0165/O0200/O0783 on TS and BDPCM signalling", no. JVET-O1136, 7 July 2019 (2019-07-07), XP030293864, Retrieved from the Internet <URL:https://jvet-experts.org/doc_end_user/documents/15_Gothenburg/wg11/JVET-O1136-v1.zip JVET-N1001-v10_JVET-O1136.docx> [retrieved on 20190707]
  • [AP] HENRY (ORANGE) F ET AL: "CE8-related: SPS flag for BDPCM", no. JVET-O0165 ; m48258, 25 June 2019 (2019-06-25), XP030218746, Retrieved from the Internet <URL:http://phenix.int-evry.fr/jvet/doc_end_user/documents/15_Gothenburg/wg11/JVET-O0165-v1.zip JVET-O0165/JVET-O0165DraftText.docx> [retrieved on 20190625]
  • See also references of WO 2020256389A1

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

US 2022078433 A1 20220310; CN 113994669 A 20220128; EP 3989567 A1 20220427; EP 3989567 A4 20230405; JP 2022533771 A 20220725; JP 2023076587 A 20230601; JP 7259087 B2 20230417; JP 7506791 B2 20240626; KR 20210142007 A 20211123; WO 2020256389 A1 20201224

DOCDB simple family (application)

US 202017424347 A 20200617; CN 202080043583 A 20200617; EP 20826626 A 20200617; JP 2021569438 A 20200617; JP 2023060657 A 20230404; KR 2020007811 W 20200617; KR 20217036662 A 20200617